Engineered for demanding 2L-scale tasks, our 2 liter rotary evaporator accelerates solvent recovery while minimizing thermal degradation. Its corrosion-resistant borosilicate glass handles aggressive solvents, while the dual-layer PTFE seals eliminate vacuum leaks during prolonged runs.
The responsive digital interface lets you fine-tune rotation speed and bath temperature (±1°C accuracy) for sensitive compounds. Safety isn’t optional—the reinforced shield and auto pressure-release protect your team. Compact enough for crowded hoods, yet robust enough for daily pharmaceutical, cannabis, or R&D use.
Your 5L rotary evaporator tackles high-volume extraction with military-grade seals, rapid solvent recovery, and ±0.5°C temperature stability.
Corrosion-resistant glass resists harsh solvents, while the auto-lift function prevents spills during shutdown. Designed for cannabis oils, botanical concentrates, or pilot-scale R&D—its compact frame fits tight labs.
Your 10L rotary evaporator combines industrial-grade borosilicate glass, rapid solvent recovery, and ±0.3°C precision for bulk botanical oils or chemical concentrates.
Leak-proof PTFE seals handle 24/7 runs, while the ergonomic lift system prevents sample loss. Built for pilot plants or industrial labs.
Your 20L rotary evaporator delivers relentless performance with reinforced SS316 frame, precision-engineered vacuum control, and ±0.2°C thermal stability for bulk APIs or plant oils.
Anti-corrosion seals endure aggressive solvents, while the explosion-proof motor safeguards 24/7 operation. Built to withstand pilot-to-production demands
Your 50L rotary evaporator crushes bulk batches with industrial-grade borosilicate glass, ±0.1°C thermal precision, and explosion-proof seals for round-the-clock solvent recovery.
Reinforced structure shrugs off corrosive agents, while automated pressure control prevents blowouts. Built for pharma, cannabis, or chemical giants.
Lab Unique manufacture rotary evaporators that labs and factories trust—no middlemen, just raw expertise. Every unit is hand-assembled with military-grade seals, lab-tested glass, and ISO 9001-certified rigour.
Need customization? Our R&D tailors speed, capacity, or materials to your exact workflow. Backed by 24/7 troubleshooting, 10-year parts coverage, and zero downtime guarantees. When failure isn’t an option, neither are compromises.
Your lab’s edge starts here—rotary evaporators forged with military-grade PTFE seals, 5mm reinforced glass, and ±0.05°C thermal control for explosive-sensitive R&D. We don’t just build units; we solve extraction nightmares.
Corrosive solvents? Our anti-fragility coating laughs. Batch variability? Patented pressure algorithms crush it. ISO 13485-certified, CE-marked, 2000-hour stress-tested. Customize condensers, speed profiles, or flask sizes in 48 hours. 24/7 tech support.
Your clients demand reliability, we deliver lab-grade beasts with explosion-resistant glass, -40°C to 200°C fluid adaptability and whisper-quiet brushless motors. Pharma giants and nano-scale startups trust our units to extract anything: terpenes, APIs, or volatile organics. Corrosion-proof PTFE seals survive nitric acid baths; dual condensers slash recovery time by 65%. ISO 13485 meets FDA GMP. Backed by 24/7 live troubleshooting and quality warranties.
To start a botanical extraction, you must first perform a primary crude filtration, pour the liquid solution into the evaporating flask, turn on your chiller and vacuum pump, set the rotation speed, and slowly lower the flask into the pre-heated water bath.
Starting your extraction workflow correctly ensures both operator safety and high-yield compound recovery. Before activating the heat on your Rotary Evaporator for Extraction, always double-check that all glassware joints are securely clamped and lightly lubricated with vacuum grease. This guarantees that air does not leak into the system, which would stall your evaporation process.
Once the vacuum level stabilizes at your target pressure, initiate a moderate rotation speed (usually between 60 to 120 RPM). This action creates a continuous, thin liquid film inside the flask, maximizing the surface area exposed to the heat. Finally, monitor the condensation rate in the receiving flask to ensure your chiller is keeping up with the vapor volume, allowing for a smooth and steady extraction run from the very beginning.
For standard ethanol extraction, you should configure your heating bath to 40°C, set your cooling chiller to -10°C, and adjust your digital vacuum controller to approximately 100 mbar to achieve the ideal boiling point.
Configuring these specific parameters relies on the industry-standard “Delta 20 Rule” for balancing thermal dynamics. When operating a Rotary Evaporator for Extraction, you want the heating bath temperature to be 20°C hotter than the solvent’s vapor temperature, while the cooling condenser should run 20°C colder than the vapor. This optimal gradient ensures rapid vaporization without thermal degradation of your botanical oils.
By starting your ethanol run at 40°C under a managed 100 mbar vacuum, you prevent the target cannabinoids or essential oils from overheating. It also minimizes the risk of thermal shock to your Borosilicate components. Always adjust the vacuum levels gradually rather than dropping the pressure all at once, as a sudden pressure drop can destabilize your system equilibrium.
The best way to load your materials is to perform the initial crude wash in a separate cryogenic centrifuge or tank, thoroughly filter out the residual biomass, and then use a vacuum feeding tube to draw the clean liquid solution into the evaporating flask.
You should never place solid biomass directly into the main boiling flask of a Rotary Evaporator for Extraction. Solid plant matter will stick to the glass walls, causing localized hot spots that burn your extracts and make the glassware incredibly difficult to clean. Instead, ensure your raw material is completely filtered down to the micron level before introducing it to the machine.
Using the built-in vacuum feeding valve on your Rotary Evaporator for Extraction allows you to safely load your liquid solvent mixture without breaking the system vacuum. This method saves significant processing time, protects the purity of your extracts from atmospheric contamination, and maintains a seamless, highly professional workflow in your extraction laboratory.
You can prevent sample bumping by utilizing a glass bump trap between your flask and vapor duct, increasing the rotation speed gradually, and using a precision vacuum controller to lower the system pressure slowly.
Bumping is a major challenge during the initial startup phase of oil recovery. It occurs when a pocket of solvent overheats and vaporizes violently, splashing raw, unrefined extract directly up into your clean condenser assembly. When using a Rotary Evaporator for Extraction, installing a dedicated glass bump trap acts as a physical safety barrier that catches any sudden liquid surges before they contaminate your distillate.
Additionally, modern digital controllers allow you to ramp up the vacuum pressure smoothly. By avoiding sudden drops in pressure and maintaining a high rotation speed, you break up surface tension and encourage uniform boiling. This careful calibration ensures that your high-value botanical oils remain safely inside the evaporating flask where they belong.
You must prepare a high-capacity recirculating chiller capable of reaching sub-zero temperatures and a chemical-resistant diaphragm vacuum pump with a high flow rate before initiating large-scale production.
A large-scale Rotary Evaporator for Extraction cannot function as a standalone unit. The speed of your solvent recovery is heavily dependent on how quickly your auxiliary machines can remove air and condense heavy vapor volumes. For a 20L or 50L industrial unit, your recirculating chiller needs enough cooling wattage to offset the immense heat generated by the large stainless steel water bath.
Similarly, your vacuum pump must feature oil-free PTFE diaphragms to resist corrosion from volatile organic solvents. Importers and distributors should always ensure these auxiliary systems are bundled together with identical hose barb connections and compatible electrical line voltages, facilitating a seamless, plug-and-play installation for the commercial end-user.
A digital water bath with a precise PID controller and a non-stick Teflon coating is the recommended choice for volatile essential oil processing because it prevents overheating and maintains tight temperature consistency.
Volatile terpenes and delicate aromatic compounds are highly sensitive to extreme heat. If your heating source spikes even a few degrees too high, you risk scorching the oil and ruining the fragrance profile. Therefore, the best Rotary Evaporator for Extraction for this application relies on a water bath that distributes heat perfectly across the entire surface of the Borosilicate glass.
The integrated PID controller constantly calibrates power output to maintain temperature accuracy within ±0.1°C. Furthermore, a Teflon-coated or premium stainless steel bath basin ensures that any accidental solvent spills do not cause corrosion, keeping the heating element pristine and ensuring the long-term reliability required by high-end cosmetic and pharmaceutical manufacturers.
Yes, a fully certified explosion-proof (Ex-proof) motor and control system is the absolute standard and highly recommended type for any commercial extraction facility handling flammable solvents.
Safety compliance is a critical priority for modern botanical facilities. When processing large quantities of ethanol, heptane, or hexane, volatile vapors can accumulate quickly in the air. A standard electric motor can generate minor internal sparks during rotation, posing a severe fire hazard. Opting for an Ex-proof Rotary Evaporator for Extraction ensures all electrical housings are completely sealed against vapor penetration.
From the heavy-duty induction motor to the remote-wired control panel, every electrical element is designed to prevent ignition. International distributors and facility managers must select this recommended configuration to satisfy strict local workplace safety regulations and protect their technicians and multi-million dollar extraction facilities from industrial accidents.
To choose the right size, you should calculate your desired hourly solvent throughput and select a flask volume where your typical liquid batch fills no more than 50% to 60% of the total flask capacity.
For example, if you need to process 10 liters of crude solution per hour, a 20L model is the most suitable option. You must never fill an evaporating flask to the brim; leaving ample headspace inside the glass is vital for allowing proper vapor expansion and preventing violent liquid bumping during the extraction process.
When selecting a suitable Rotary Evaporator for Extraction, buying a slightly larger unit than your current minimum requirement is always smart for future-proofing. A 5L unit is perfect for boutique craft labs and small R&D testing, while commercial facilities looking to scale up should immediately look at 20L or 50L industrial platforms to ensure their daily manufacturing quotas are met efficiently.
You should look for a minimum glass wall thickness of 3mm to 5mm, depending on the flask size, manufactured exclusively from GG-17 High Borosilicate Glass 3.3.
Heavy chemical processing involves continuous thermal stress and deep negative pressure conditions. If the glass components are too thin or contain structural impurities, they will fail under vacuum, resulting in a dangerous implosion. When you choose a suitable Rotary Evaporator for Extraction, verify that the manufacturer utilizes heavy-walled, hand-blown borosilicate glass.
This specialized grade of glass offers a low coefficient of thermal expansion, meaning it can transition from a boiling water bath to freezing condenser coils without warping or cracking. Investing in high-grade, thick-walled glass components gives operators the confidence to run deep vacuum levels safely, protecting both the expensive raw materials and the lab personnel.
To choose a suitable unit, you must verify that the main vacuum seal assembly is constructed from pure, compound PTFE reinforced with internal fluororubber O-rings to ensure complete chemical inertness.
Acidic solvents and aggressive organic chemicals can quickly dissolve standard rubber or cheap silicone gaskets, leading to vacuum loss, solvent leakage, and batch contamination. When evaluating a Rotary Evaporator for Extraction, the sealing mechanism demands close inspection. Pure PTFE resists nearly all corrosive acids and harsh industrial solvents.
The best modern sealing designs utilize a spring-loaded geometry that maintains constant mechanical pressure against the rotating glass shaft even as the material naturally wears down over time. Ensuring your equipment features these heavy-duty component materials protects your vacuum integrity and drastically reduces your annual overhead costs for spare part replacements.
You should always choose an automated motorized lift for industrial-scale operations to ensure maximum operator safety and precise positioning of heavy, fluid-filled glassware.
Lifting a 20-liter or 50-liter glass flask filled with hot solvent out of a heating bath by hand is incredibly heavy and poses a major liability in a commercial facility. A motorized lift on a heavy-duty Rotary Evaporator for Extraction allows the operator to raise or lower the entire glass assembly smoothly with the press of a button, minimizing physical strain.
Furthermore, premium motorized systems come integrated with an automated electronic lift safety feature. If the laboratory experiences a sudden power outage, the motorized mechanism automatically raises the boiling flask out of the hot water bath, preventing the delicate crude extract from overheating, scorching, or foaming over while unattended.
A larger condenser surface area directly accelerates your recovery speed because it allows a greater volume of vapor to be chilled back into liquid simultaneously, preventing thermal bottlenecks.
If your heating bath vaporizes solvent faster than your condenser can cool it down, the excess vapor will travel straight into your vacuum pump, damaging the internal valves and leaking vapors into your workspace. When you choose a suitable Rotary Evaporator for Extraction, you must match the condenser surface area (measured in square meters) to your heating capacity.
For fast, high-efficiency extraction, look for double-helix or multi-coil vertical condenser designs. These advanced structures packed into modern glass assemblies provide maximum cooling contact within a compact physical footprint, allowing you to maximize your daily solvent reclamation rates and maintain a highly streamlined production cycle.
A reliable manufacturer should implement a rigorous 24-hour vacuum retention test, dynamic motor rotation stress testing, and high-pressure glassware thermal shock analysis before shipment.
Quality assurance is what separates elite industrial factories from generic trading firms. When searching for a reliable Rotary Evaporator supplier in China for extraction, ask for documented proof of their quality control workflows. The vacuum retention test should prove that the completely assembled unit can hold a deep vacuum over an extended period without a single millibar of leakage.
Additionally, the motor drive should be run continuously at maximum RPMs to check for overheating, balance issues, or concentric wobble. Buying from a factory that enforces these exhaustive inspection protocols guarantees that international distributors receive perfectly functional, market-ready equipment that performs flawlessly right out of the shipping crate.
You can verify authenticity by requesting formal material test reports, inspecting the glass for a distinctive slight amber tint under specialized polariscope lighting, and checking for precise branding stamps.
Counterfeit or low-grade glass is a significant risk when dealing with unverified suppliers, as cheap glass cannot handle intense lab vacuum pressures. A trustworthy Rotary Evaporator supplier in China for extraction will always be completely transparent about their raw material sourcing. They should readily provide factory certificates proving the use of genuine GG-17 or international equivalent High Borosilicate 3.3 glass.
When you receive a sample unit, inspect the joints carefully. Authentic borosilicate glass features flawless clarity, zero air bubbles trapped within the walls, and perfectly ground joints. Partnering with a manufacturer who takes pride in clear material documentation protects your supply chain from defective components and dangerous lab accidents.
Yes, an established manufacturer with an in-house glassblowing division can customize flasks, add specialized reflux valves, or design custom cold traps tailored to your specific process.
Every extraction lab operates slightly differently; some require continuous feeding ports, while others need specific receiving flask volumes to fit their storage racks. A premier Rotary Evaporator supplier in China for extraction does more than just sell standard off-the-shelf models. They employ expert engineers who can take your technical sketches and manufacture bespoke glassware configurations.
This OEM capability is a massive advantage for international distributors. It allows you to offer custom-tailored solutions to university research labs and specialized pharmaceutical clients, setting your business apart from competitors who only sell rigid, unchangeable standard designs.
If you need a professional and reliable lab equipment supplier, Lab Unique will be your better choice. Read More
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